AE-1396 - Application Guidelines for Copeland Semi ... · PDF fileApplication Guidelines for Copeland™ Semi-Hermetic Compressors ... CO2 Envelope ... the compressor until the system
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Safety InstructionsCopeland™compressorsaremanufacturedaccordingtothelatestU.S.andEuropeanSafetyStandards.Particularemphasishasbeenplacedontheuser'ssafety.Safetyiconsareexplainedbelowandsafetyinstructionsapplicabletotheproductsinthisbulletinaregroupedonpage3.Theseinstructionsshouldberetainedthroughoutthelifetimeofthecompressor.You are strongly advised to follow these safety instructions.
Safety Instructions Copeland Scroll™ compressors are manufactured according to the latest U.S. and European Safety Standards. Particular emphasis has been placed on the user's safety. Safey icons are explained below and safety instructions applicable to the products in this bulletin are grouped on Page 3. These instructions should be retained throughout the lifetime of the compessor. You are strongly advised to follow these safety instructions. Safety Icon Explanation
DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION, used with the safety alert symbol, indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE is used to address practices not related to personal injury.
CAUTION, without the safety alert symbol, is used to address practices not related to personal injury.
ELECTRICAL SHOCK HAZARD• Disconnect and lock out power before servicing. • Discharge all capacitors before servicing. • Use compressor with grounded system only. • Molded electrical plug must be used when required. • Refer to original equipment wiring diagrams. • • Failure to follow these warnings could result in serious personal injury.
PRESSURIZED SYSTEM HAZARD• System contains refrigerant and oil under pressure.• Remove refrigerant from both the high and low compressor side before
removing compressor. • • Never install a system and leave it unattended when it has no charge,
a holding charge, or with the service valves closed without electrically locking out the system.
• Use only approved refrigerants and refrigeration oils. • Personal safety equipment must be used. • Failure to follow these warnings could result in serious personal injury.
BURN HAZARD• Do not touch the compressor until it has cooled down. • Ensure that materials and wiring do not touch high temperature areas of
the compressor. • Use caution when brazing system components. • Personal safety equipment must be used. • Failure to follow these warnings could result in serious personal injury or
property damage.
COMPRESSOR HANDLING• Use the appropriate lifting devices to move compressors. • Personal safety equipment must be used. • Failure to follow these warnings could result in personal injury or
property damage.
Safety Statements• Refrigerant compressors must be employed only for their intended use. •
install, commission and maintain this equipment. • • All valid standards and codes for installing, servicing, and maintaining electrical and
refrigeration equipment must be observed.
Instructions Pertaining to Risk of Electrical Shock, Fire, or Injury to Persons
Note: The compressor is only one component which must be combined with many others to build a functional and efficient refrigeration system. Therefore the information in this bulletin relates to all 4MTLS compressors for CO2 medium temperature applications with standard equipment and accessories only.
Thisbulletinisintendedtoenableuserstoensurethesafeinstallation,starting,operationandmaintenanceof semi-hermetic compressors. It is not intended toreplace the system expertise available from systemmanufacturers.
The Copeland 4MTLS compressor model numbersincludethenominalcapacityat60Hertz,at14°F/1305psia/32°F/95°F (evaporating temperature/dischargepressure/return gas temperature/gas cooler exittemperature)withR-744refrigerant.
Example:4MTLS82KE-FSD-C004=NumberofCylinders
MT=MediumTempApplication(Transcritical)
LS=ModelVariation
82K=NominalCapacity(kBtu/hr)
E,L=OilType(POE),Lessoil
FSC = 208-230 Volt Motor Version
FSD = 460 Volt Motor Version
TSE = 575 Volt Motor Version
C00=ProductVariation
Application RangeQualified Refrigerants and OilsCopeland4MTLSareonlyapplicable for transcriticalCO2 (R-744) applications. The approved oil is apolyolester (POE) lubricant, Emkarate RL68HB. OilchargeandrechargevaluesarelocatedinEmerson'sOnlineProductInformationatEmersonClimate.com. For other oil types, contact Emerson.Recommendedqualityforcarbondioxidepuritygradeis4.0[(≥99.99%)H2O≤10ppm,O2≤10ppm,N2≤50ppm]or higher.
Application Limits
CAUTIONOil dilution! Bearing malfunction! A minimum superheat of 9°F (5K) at the compressor inlet is required at all operating conditions to avoid oil dilution with CO2 (R-744). 18°F (10K) superheat is recommended.
The compressor superheat should be controlledat a balanced level to not only avoid oil dilution inthe compressor but also maintain a compressorhead discharge temperature below 310 °F (154°C),especiallyathighcompressionratios(highcondensingandlowevaporatingtemperatures).SeeFigure 2 for compressoroperatingenvelopes.
Design FeaturesCompressor ConstructionAll compressors are equipped with reed-style valveplates which cannot be dismantled. To maintain thehighcapacityof thesecompressors, thecorrectvalveplate-to-bodygasketmustalwaysbeselectedincaseof exchange.
Each cylinder head has a plugged 1/8" - 27 NPTFtappedholeforconnectinghigh-pressureswitches.High-pressureswitchesmustbecalibratedandtestedbeforeputtingthecompressorintoservice.Theymuststopthecompressorif1755psig(121bar)isexceeded.
Note: Copeland 4MTLS compressors come equipped with an external high side safety valve that opens at 1960 psi (135 bar). Refer to Safety Valves section.
Compressor CoolingAll4MTLSCO2compressorsaresuctiongas-cooled.With suction gas-cooled compressors, the motor iscooledbyrefrigerantgasthatflowsthroughthemotor.
Oil LevelAll 4MTLS CO2 compressors are equipped withthreesight glasses, twoof themon the sidesof thecompressorandoneonthefront.SeeFigure 3.
Theoptimumoillevelshouldbecheckedbyoperatingthe compressor until the system is stable and thencheckingthesightglassreadingwiththeappropriatediagram.
Oillevelonthesidesightglassesshouldbeaminimum1/4andmaximum3/4ofthesightglass.Thelevelcanalso be checked within 10 seconds of compressorshutdown.SeeFigure 4.
Oil Level Control40Kto15McapacityratedCO2 compressors are not assembledwithanoilpump,soanoilpressuresafetycontrol cannot be used to protect the compressoragainstlubricationproblemsforthesecompressors.
Afloat levelswitch foroilcanbeusedtoprotect thecompressoragainstoil loss.HBSO1isalevelswitchfor detecting common lubricating oils in refrigerationsystems.TheHBSO1oil level switch/sensor can beusedtosecureorcontrollubricationofcompressorsathighandlowpressureapplications.
WARNINGRisk of collapse! Personal injuries! Move compressors only with appropriate mechanical or handling equipment according to weight. Keep in the upright position. Do not stack pallets on top of each other. Keep the packaging dry at all times. See Figure 5.
Compressors are individually packed and may bedeliveredonpalletsdependingonquantityandsize.
requires positioning. Using discharge or suctionconnectionsforliftingmaycausedamageorleaks.
Ifpossible,thecompressorshouldbekepthorizontalduring handling. For safety reasons two lifting eyesshouldbefittedbeforemovingacompressor(½"-13UNC). Refer to Figure 6.
When 4MTLS compressors are mounted in racks,rubbermountingpartsshouldbeused.
A compressor may be rigidly mounted (i.e., withoutrubbermountingorsprings).Inthiscasemoreshockandvibrationloadingwillbetransmittedtotheframe.Useonlythecompressormountingfeetforfixationandavoiddirectcontactofotherpartsof thecompressorhousingwithborderingcomponentsorbaseframe.
WARNINGIn the event that a safety valve activates, it is recommended to replace the valve to avoid nuisance trips. Always check the system for CO2 loss after activation of the external pressure safety valve.
Safety Relief Valves/Standstill PressuresThecompressoremploysafactoryinstalledpressuresafety relief valve on the discharge side of thecompressor. The valve setting provides that if the
Emersonalsooffersa1305psi(90bar)lowpressuresafety relief valve thatmaybeemployed in thefieldonthesuctionorlowpressuresideofthecompressor.ThislowpressurevalveisnotrequiredbyULandisnotintendedtoreplacethehighpressurevalvebutratherserve as a means of added compressor protection.Typically, system controls will serve as a means ofprotectingthesuctionor lowpressureside.Withthisvalveemployed,standstillpressuresare1305psi(90bar) lowsideand1960psi (135bar)highside.SeeTable 2.
Note: The 1960 psi (135 bar) valve is M24 - LH thread and the 1305 psi (90 bar) valve is M24 - RH thread to prevent improper usage.
Maximum Operating PressuresMaximum operating pressures are defined by theoperatingenvelope,asseeninFigure 2.
It is recommended to connect the pressure cut-outdevices directly to the compressor housing. For ahigh-pressure cut-out switch, connection port 4maybeused.Forlow-pressurecut-outconnection,port6isrecommended.SeeFigure 9 to locate high pressure andlowpressureconnectionpositionsaswellastheportidentityonthecompressor.
Shut Off Valve Design 4MTLS compressors are factory equippedwith bothsuctionanddischargeshut-offvalves. Thestandardshut-off valves are flange valves with one flareconnection port (lockable) for service. The serviceconnectionport isa7/16”–20UNFwithablindcapSAE¼”(materialofblindcapisstainlesssteel1.4301).Valveconnectionmethodsmaybebrazing,buttwelding,orfilletwelding–seeTable 3forconnectionsizes.
Torquevaluesforthebolts,spindlecap,blindcapandglandsealmaybefoundinAppendix 2.Thespindleis front seated (closed to piping system) when thecompressorisdelivered.
Valvematerialisfinegrainedmildsteel(EN10025)withFe/Cu5Sn5platingmaterial.Forbrazingconnectionswhere dissimilar or ferricmetals are joined, a silveralloyrodwithaminimumof34%silvershouldbeused,eitherfluxcoatedorwithaseparateflux.Forwelding
operations with stainless steel tubing, the weldingconsumablemustbeselectedfordissimilarmaterials(SStomildsteel).
OptionaldischargevalveswithcompressionfittingsareavailablethroughEmersonandinstalledinthefield.SeeTable 3 for offering.
Screens
CAUTION Screen blocking! Compressor breakdown! Use screens with at least 0.6 mm openings.
Theuseofscreensfinerthan30x30mesh(0.6mmopenings)anywhereinthesystemshouldbeavoidedwiththesecompressors.Fieldexperiencehasshownthat finer mesh screens used to protect thermalexpansion valves, capillary tubes, or accumulatorscanbecometemporarilyorpermanentlypluggedwithnormalsystemdebrisandblocktheflowofeitheroilorrefrigeranttothecompressor.Suchblockagecanresultin compressor failure.
Intheeventofareleasedchargethroughthesuctionsafety relief valve (if installed, not manditory),ensure that the suction screen does not need tobe replaced. If a replacement is required, refer to EmersonClimate.com
ELECTRICAL CONNECTIONGeneral RecommendationsThe compressor terminal box has a wiring diagramon the inside of its cover. Before connecting thecompressor,ensurethesupplyvoltage,thephasesandthefrequencymatchthenameplatedata.
Note: Pay special attention to the position of the voltage terminals. Refer to Figures 10 or 11.
Part-Winding Motor (YY/Y) – Code APart winding PWS motors contain two separatewindings which are internally connected in star andoperatedinparallel.Youcannotchangethevoltagebychanging the electrical connections, the motor is only suitableforonevoltage.
Wiring DiagramsThepositionofthejumpersintheterminalboxandtherecommendedwiringdiagramsareshowninFigures 10 or 11.
Terminal Box Isolator40Kto15MFSD(460v),40Kto15MTSE(575v)and40K to64KFSC(208/230v)compressormodelsareequippedwithtwoisolators.Oneisforacrossthelinestartandoneisforpartwindingstartapplicators.Referto Figure 12.82Kto15MFSC(208/230v)compressormodelsdonotincludeisolators.RefertoFigure 13.Note: It is recommended to use these isolators on above mentioned models including the terminal isolators in order to keep the terminals isolated.BreakerIndependentlyfromtheinternalmotorprotection,fusesmustbeinstalledbeforethecompressor.TheselectionoffuseshastobecarriedoutaccordingtoVDE0635,DIN 57635, IEC 269-1or EN 60-269-1.
CoreSense Protection CoreSense Protection provides motor protection for4MTLS compressors. The CoreSense Protection Module (CPM) will communicate a motor protectiontrip when the resistance caused by an increasingmotortemperaturehasrisenabove4.5KOhms.Thecompressorwillrestartoncetheresistancedropsbelow2.5KOhmsandfiveminuteshaselapsed.
CoreSense Protection for Copeland Discus 4MTLScompressors can also provide valuable dischargetemperature protection. By installing the temperature probeintotheheadoftheDiscus4MTLScompressorand connecting to the CPM, CoreSense will protectthe compressor from high discharge temperatureconditions. If the temperaturesensordetectsaheadtemperature greater than 310°F, CoreSense will trip
thecompressoroffuntilthetemperaturecoolsdowntoanacceptablelevel(about267°F)andatwominuteofftimehasbeenachieved.Ahighdischargetemperaturelockoutcanalsobeenabled through theE2.Pleaserefer to AE8-1367 for more information about theCoreSense Protection and E2 setup screens. Themodule is capable of communication via MODBUSprotocol.
Because there is no oil pump, the low oil pressureprotection feature is disabled on the 4MTLScompressors.
The CoreSense Protection module comes factoryinstalled on each 4MTLS compressor. For electricalconnectionstothemodule,refertoAE8-1367.
Note: CoreSense Protection on 4MTLS compressors disables switch 6. Only switches 1 to 5 may be used for node address (32 combinations).
Crankcase HeatersNOTICE
Oil dilution! Bearing malfunction! Turn the crankcase heater on 12 hours before starting the compressor.
Twovoltages(115Vand208V)forthe100wattheaterare available for use on the 4MTLS compressors.Please refer to Figure 14attheendofthisbulletin.
STARTUP AND OPERATION
WARNINGDiesel effect! Compressor destruction! The mixture of air and oil at high temperature can lead to an explosion. Avoid operating with air.
Leak TestThesuctionshut-offvalveanddischargeshut-offvalveonthecompressormustremainclosedduringpressuretesting topreventairandmoisture fromentering thecompressor. The test pressure (dry nitrogen) mustnotexceed870psi(60bar)providednoothersystemcomponent’spressureislower,inthiscasethelowerpressure is the test pressure. Systems should becheckedonceperyear (oras required).Check locallegislation for requirements.
System Evacuation Beforecommissioningthesystem,removetheholdingchargeandthenevacuatewithavacuumpump.Properevacuation reduces residual moisture to 50 ppm.Theinstallationofadequatelysizedaccessvalvesatthe furthest point from the compressor in the suction and liquid lines isadvisable.Toachieveundisturbedoperation,closethecompressorvalvesandevacuatethe system. Pressure must be measured using avacuumpressuregaugeontheaccessvalvesandnoton the vacuum pump; this serves to avoid incorrectmeasurements resulting from the pressure gradientalong the connecting lines to the pump. Then the compressormustbeevacuated.
Due to the factory holding charge of dry air thecompressorisunderpressureofabout14.5to36psi(1 to2.5bar), this is to indicate that thecompressordoesnotleak.
Preliminary Checks – Pre-starting Discussdetailsof the installationwith the installer. Ifpossible, obtain drawings,wiring diagrams, etc. It isidealtouseacheck-listbutalwayscheckthefollowing:
Low moisture content! Corrosive impact on refrigeration systems!UseonlyhighlydriedCO2.
Do not operate compressor without enough systemcharge to maintain at least 73 psig (5 bar) suctionpressure.Allowingapressure todropbelow73psig(5bar)formorethanafewsecondsmightcauseCO2 solidification(dryice)andblockvalvesorpipes.
ChargethesystemwithvaporCO2 up to a minimum of 145psig(10bar)topreventformingofdryice.ThencontinuewithchargingliquidCO2.Thesystemshouldbechargedthroughtheliquid-receivershut-offvalveorthroughavalveintheliquidline.
Theuseofafilterdrier in thecharging line ishighlyrecommended.Becausetheremaybeseveralvalvesinthesystem,itisrecommendedtochargeonboththehighandlowsidessimultaneouslytoensuresufficientpressureispresentinthecompressorbeforeitruns.
CAUTIONOil dilution! Bearing malfunction! It is important to ensure that new compressors are not subject to flooded start. For initial start-up, turn the crankcase heater on 12 hours prior to starting the compressor. During normal operation, when the compressor is off the crankcase heater should be on.
Minimum Run Time Emerson Climate Technologies recommends amaximum of 10 starts per hour. The most critical considerationistheminimumruntimerequiredtoreturnoil to the compressor after start-up.
Recommended Inverter Range4MTLS compressors can be applied with a variablefrequencydrive.Theapprovedoperatingrangeis25to60Hz.
Running the CO2 compressor with an inverter is areliable application. Resonances might occur in thelower frequency ranges. This phenomenon largelydepends on the operating conditions and systemdesign.
The following hardware variables have a significantimpactonpossibleresonances:
• Mountingparts:Therubbermountingpartssuppliedwith the 4MTLS compressor are suitable for thewholefrequencyrange.
• Baseframedesign:Theframeworkstructureshouldbestiffenoughsothattheresonantfrequencyisabove 70 hz.A design with natural frequenciesbelowthe25hzspeedmayleadtohighvibrationsduringstart-up.
MAINTENANCE AND REPAIRExchanging the Refrigerant4MTLScompressorsareonlyreleasedforusagewithCO2 (R-744) as a refrigerant.
Forservicekitpartnumbers,refertotheOnlineProductInformation at EmersonClimate.com or contact your Emersonsalesrepresentative.
Replacing a Compressor
CAUTIONInadequate lubrication! Bearing destruction! Exchange the accumulator after replacing a compressor with a burned out motor. The accumulator oil return orifice or screen may be plugged with debris or may become plugged. This will result in starvation of oil to the new compressor and a second failure.
In the case of a motor burnout, the majority ofcontaminatedoilwillberemovedwiththecompressor.Therestoftheoiliscleanedthroughtheuseofsuctionandliquidlinefilterdriers.A100%activatedalumnasuction line filter drier is recommended but mustbe removed after 72 hours. When a compressor isexchangedinthefield,itispossiblethatamajorportionoftheoilmaystillbeinthesystem.
WARNINGChemical reaction! Compressor destruction! Do not mixupesteroilswithmineraloiland/oralkylbenzene.
CAUTIONHandle carefully! Material harm! POE must be handled carefully and the proper protective equipment (gloves, eye protection, etc.) must be used when handling POE lubricant. POE must not come into contact with any surface or material that might be harmed by POE, including certain polymers (e.g. PVC/CPVC and polycarbonate).
POE is far more hygroscopic than mineral oil (seeFigure 15). Only brief exposure to ambient air isneededforPOEtoabsorbsufficientmoisturetomakeit unacceptable for use in a refrigeration system.SincePOEholdsmoisturemorereadilythanmineraloil it ismoredifficult to remove it through theuseofvacuum.CompressorssuppliedbyEmersonClimateTechnologies contain oil with low moisture content,anditmayriseduringthesystemassemblingprocess.Thereforeitisrecommendedthataproperlysizedfilter-drierisinstalledinallPOEsystems.Thiswillmaintainthemoisturelevelintheoiltolessthan50ppm.Ifoilischargedintoasystem,itisrecommendedtousePOEwithamoisturecontentnohigherthan50ppm.
Figure 15 compares the hygroscopic characteristics of POEoilwithmineraloil(moistureabsorptioninPPMat25°Cand50%relativehumidity).
If the moisture content of the oil in a refrigeration system reachesunacceptablyhighlevels,corrosionandcopperplatingmayoccur.Thesystemshouldbeevacuateddowntoanabsolutepressureof225micronsorlower.If there is uncertainty as to the moisture content in thesystem,anoilsampleshouldbetakenandtestedformoisture.Sightglass/moistureindicatorscurrentlyavailablecanbeusedwith theHFCrefrigerantsandlubricants; however, the moisture indicator will justshowthemoisturecontentoftherefrigerant.TheactualmoisturelevelofPOEwouldbehigherthanthesightglassindicates.Thisisduetothehighhygroscopicityof
Oil AdditivesAlthough Emerson Climate Technologies cannot commentonanyspecificproduct,fromourowntestingandpastexperience,wedonot recommend theuseofanyadditivestoreducecompressorbearinglossesor for any other purpose. Furthermore, the long term chemical stability of any additive in the presence ofrefrigerant, lowandhightemperatures,andmaterialscommonly found in refrigeration systems is complexand difficult to evaluate without rigorously controlledchemicallaboratorytesting.Theuseofadditiveswithoutadequatetestingmayresultinmalfunctionorprematurefailure of components in the system and, in specificcases,invoidingthewarrantyonthecomponent.Referto AE17-1282foradditionalinformation.
Unbrazing System Components
WARNINGExplosive flame! Burning! Oil-refrigerant mixtures are highly flammable. Remove all refrigerant before opening the system. Avoid working with an unshielded flame in a refrigerant charged system.
Beforeopeningupasystemitisimportanttoremoveallrefrigerantfromboththehighandlowsidesofthesystem. If a brazing torch is then applied to the lowsidewhile the lowsideshellandsuction linecontainpressure, the pressurized refrigerant and oil mixturecouldignitewhenitescapesandcontactsthebrazingflame. To prevent this occurrence, it is important tocheckboththehighandlowsideswithmanifoldgaugesbefore unbrazing. Instructions should be providedin appropriate product literature and assembly (linerepair) areas. If compressor removal is required, thecompressor should be cut out of system rather thanunbrazed.
Dismantling and DisposalRemovingoilandrefrigerant:
• Usethecorrectequipmentandmethodofremoval.• Disposeofoilandrefrigerantproperly.• Dispose of compressor properly.
4MTLS 40K 53K 64K 82K 11M 15M-FSC X X X-FSD X X X X X X-TSE X X X X X X
78
9
ACROSS THE LINE CONNECTED
MOTOR CODE LINE VOLTAGEFSD 50 HZ. 380-420FSC 50 HZ. 200-220
01 02 03
WHEN CHECKING MOTOR PROTECTION SYSTEM:MODULE POWER MUST BE DISCONNECTED BEFORE CHECKING MOTOR SENSORS.
USE OHMMETER ONLY TO CHECK SENSOR RESISTANCE. DO NOT SHORT ACROSS THE TERMINALS.
SENSOR RESISTANCE MEASURED FROM TERMINALS (C TO S1,S2,S3) WITH MOTOR TEMPERATURE BELOW 60° C (140° F), SHOULD BE WITHIN THE FOLLOWING LIMITS: 30 TO 2400 OHMS. REFER TO EMERSON EUROPEANPUBLICATIONS GUIDELINE SH DISCUS COMPRESSORS DEC. 2001 AND US PUBLICATIONS AE BULLETIN #8-1367.
USE COPPER CONDUCTORS ONLY.
USE MINIMUM 75° C (167° F) WIRE FOR AMPACITY DETERMINATION.
USE THIS EQUIPMENT ON A GROUNDED SYSTEM ONLY.
PRIMARY SINGLE PHASE FAILURE PROTECTION IS PROVIDED.
OPTIONAL CRANKCASE HEATER, FAN OR CAPACITY CONTROL VALVE(S) MUST BE CONNECTED ONLY TO THEIR RATED VOLTAGE.
OVERCURRENT PROTECTION DEVICE RATING AND TYPE MUST BE IN ACCORDANCE WITH REGULATORY AGENCY END PRODUCT APPROVALS - SEE SYSTEM NAMEPLATE.
ACROSS THE LINE CONNECTED
MOTOR WINDINGCONNECTIONS
052-
2753
-00
WIRING DIAGRAML7 L8 L9
CURRENTSENSOR
COMPRESSORWIRINGHARNESS
CURRENTSENSING
L1 L2 L3
CURRENTSENSOR
7 8BLACK
ORANGE
PART WINDING START CONNECTED
LINE VOLTAGE
01 02 03 01 02 03CONTROL CIRCUIT
VOLTAGE
C1
TD
C2TD
L 1 L 2 L 3
T 1 T 2 T 3
L 1 L 2 L 3
T 1 T 2 T 3
78
9
12
3
CONTROLS
91 2 3
C1C2
1(U) 3(W)
7(Z)8(X)
9(Y)
2(V)
UV
W
ZX
Y
1U
Z
2V
X
3W
Y
PART WINDING START
L M PROTECTOR MODULE
78
9
01 02 03CURRENTSENSOR
1U
Z
2V
X
3W
Y
MOTOR CODE LINE VOLTAGEFSD 60 HZ. 460TSE 60 HZ. 575FSC 60 HZ. 208-230
WHEN CHECKING MOTOR PROTECTION SYSTEM:MODULE POWER MUST BE DISCONNECTED BEFORE CHECKING MOTOR SENSORS.
USE OHMMETER ONLY TO CHECK SENSOR RESISTANCE. DO NOT SHORT ACROSS THE TERMINALS.
SENSOR RESISTANCE MEASURED FROM TERMINALS (C TO S1,S2,S3) WITH MOTOR TEMPERATURE BELOW 60° C (140° F), SHOULD BE WITHIN THE FOLLOWING LIMITS: 30 TO 2400 OHMS. REFER TO EMERSON EUROPEANPUBLICATIONS GUIDELINE SH DISCUS COMPRESSORS DEC. 2001 AND US PUBLICATIONS AE BULLETIN #8-1367.
USE COPPER CONDUCTORS ONLY.
USE MINIMUM 75° C (167° F) WIRE FOR AMPACITY DETERMINATION.
USE THIS EQUIPMENT ON A GROUNDED SYSTEM ONLY.
PRIMARY SINGLE PHASE FAILURE PROTECTION IS PROVIDED.
OPTIONAL CRANKCASE HEATER, FAN OR CAPACITY CONTROL VALVE(S) MUST BE CONNECTED ONLY TO THEIR RATED VOLTAGE.
OVERCURRENT PROTECTION DEVICE RATING AND TYPE MUST BE IN ACCORDANCE WITH REGULATORY AGENCY END PRODUCT APPROVALS - SEE SYSTEM NAMEPLATE.
052-
3017
-00
L7 L8 L9
CURRENTSENSOR
COMPRESSORWIRINGHARNESS
CURRENTSENSING
L1 L2 L3
7 8BLACK
ORANGE
91 2 3
PART WINDING START
WIRING DIAGRAM
MOTOR WINDINGCONNECTIONS
7(Z) 8(X) 9(Y)
1(U) 3(W)2(V)
PART WINDING START CONNECTED
LINE VOLTAGE
01 02 03 01 02 03CONTROL CIRCUIT
VOLTAGE
C1
TD
C2TD
L 1 L 2 L 3
T 1 T 2 T 3
L 1 L 2 L 3
T 1 T 2 T 3
1 2 3
7 8 9
CONTROLS
C1C2
(Z) (X) (Y)
(U) (V) (W)
L M PROTECTOR MODULE
7 8 9
ACROSS THE LINE CONNECTED
MOTOR CODE LINE VOLTAGEFSC 50 HZ. 200-220 60 HZ. 208-230